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DI-27 参数 Datasheet PDF下载

DI-27图片预览
型号: DI-27
PDF下载: 下载PDF文件 查看货源
内容描述: 3 W电源适配器: \u003c 10 mW的空载功耗 [3 W AC Adapter: <10 mW No-load Consumption]
分类和应用:
文件页数/大小: 2 页 / 51 K
品牌: POWERINT [ Power Integrations ]
 浏览型号DI-27的Datasheet PDF文件第1页  
DI-27  
10  
Key Design Points  
• Design bias winding circuit to provide 250 µA to 300 µA  
at no-load.  
• Ensure C5 is large enough to supply above current at the  
very low no-load switching frequencies.  
• Minimize secondary circuit bias currents. Use low current  
feedback Zeners for best tolerance.  
• ZenerorRCDclampcanbeusedtoslightlyreduceno-load  
consumption further. Use a 200 V Zener or maximize  
resistor value in RCD clamp for lowest losses.  
• Designtransformerwithlowreflectedvoltagetominimize  
clamp losses.  
• Wind transformer for lowest leakage inductance. Choose  
wire gauges to completely fill winding layers.  
• Wind transformer with tape between primary layers to  
further reduce intra-winding capacitance.  
8
6
4
2
Zener Clamp  
RC Clamp  
0
80  
120  
160  
200  
240  
AC Line Voltage (A)  
Figure 3. No-load Input Power Variation with Input Voltage.  
100  
TRANSFORMER PARAMETERS  
VIN = 100 VAC  
VIN = 230 VAC  
EE16  
Nippon Ceramic NC-2H  
AL of 74 nH/T2  
Core Material  
Bobbin  
EE16 10 pin  
(Ying Chin YC1607 or equivalent)  
10  
Primary (1-2), Tape  
12 V (10-9), Tape  
Bias (3-4), Tape  
Winding Order  
(pin numbers)  
Primary Inductance  
3.67 mH ±10%  
500 kHz (minimum)  
300 µH (maximum)  
Primary Resonant  
Frequency  
1
0
100  
200  
300  
400  
500  
Leakage Inductance  
BYPASS Pin Current (µA)  
Figure 2. No-load Input Power vs. BYPASS Pin Current.  
Table 1. Transformer Construction Information.  
For the latest updates, visit our Web site: www.powerint.com  
Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability.  
Power Integrations does not assume any liability arising from the use of any device or circuit described herein, nor does it convey any  
license under its patent rights or the rights of others. The products and applications illustrated herein may be covered by one or more U.S.  
and foreign patents or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power  
Integrations’ patents may be found at www.powerint.com.  
The PI Logo, TOPSwitch, TinySwitch and EcoSmart are registered trademarks of Power Integrations, Inc.  
PI Expert is a trademark of Power Integrations, Inc. ©Copyright 2002, Power Integrations, Inc.  
WORLD HEADQUARTERS  
AMERICAS  
Power Integrations, Inc.  
San Jose, CA 95138 USA  
Customer Service:  
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Power Integrations, Singapore  
Republic of Singapore 308900  
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Power Integrations  
International Holdings, Inc.  
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Phone:  
Fax:  
Phone:  
Fax:  
+44-1344-462-300  
+44-1344-311-732  
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e-mail: usasales@powerint.com  
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Power Integrations, K.K.  
Keihin-Tatemono 1st Bldg.  
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Innovatech  
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Phone:  
Fax:  
CHINA  
Power Integrations International  
Holdings, Inc.  
Phone:  
Fax:  
+82-2-782-2840  
+82-2-782-4427  
Phone:  
Fax:  
+81-45-471-1021  
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+91-80-226-6023  
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A
9/02  
www.powerint.com